How Required Minimum Distributions can increase retirees’ tax bills

As millions of American retirees turn 73 this year, many will face an IRS rule that could affect their income taxes far more than they anticipate: required minimum distributions, or RMDs. 

While these mandatory withdrawals from traditional IRAs and 401(k)s are designed to ensure the government eventually collects taxes on tax-deferred savings, financial planners warn that RMDs can unintentionally boost a retiree’s taxable income and shrink the value of means-tested benefits.

Under current law, retirees must begin taking RMDs the year they turn 73 (rising to 75 in 2033). The amount is based on the account balance at the end of the previous year and a life-expectancy factor published by the IRS. The distribution counts as ordinary income, which can:

• Increase federal and state income tax liability
• Trigger higher Medicare premiums under IRMAA rules
• Reduce the tax efficiency of Social Security benefits
• Push retirees into a higher marginal tax bracket

For those with large retirement balances or multiple accounts, the tax impact can be steep.

Why RMDs create problems

Financial planners say the challenge arises because the withdrawals are mandatory even if a retiree doesn’t need the income. RMDs can undo a lifetime of careful tax planning if retirees haven’t strategized early. When RMDs stack on top of Social Security, pension income, and investment gains, the cumulative effect can create a “tax bomb” in the mid-70s.

Here are some strategies to minimize the tax burden:

1. Roth conversions

Converting portions of a traditional IRA to a Roth IRA before RMDs begin is one of the most effective long-term strategies. Although the conversion itself is taxable, it moves money into an account that will never have RMDs and allows for tax-free growth.

This can be especially effective in the years between retirement and age 73, when income tends to dip.

2. Qualified Charitable Distributions (QCDs)

Once RMD age is reached, retirees can donate up to $100,000 per year directly from an IRA to a qualified charity. These QCDs count toward the RMD but are excluded from taxable income—lowering the retiree’s adjusted gross income and potentially reducing Medicare surcharges.

3. Coordinating withdrawals in early retirement

Some retirees strategically withdraw from tax-deferred accounts before they are required to do so. This smooths out taxable income over time, preventing large RMDs later. It can also provide flexibility when combined with Social Security timing decisions.

4. Managing investment growth

If a retiree’s portfolio grows rapidly, so will their future RMDs. Planners sometimes recommend shifting some assets into lower-growth, income-producing investments within tax-deferred accounts to prevent RMDs from ballooning.

5. Consolidating accounts

Simplifying multiple retirement accounts can improve RMD management, reduce administrative errors, and make tax planning more efficient.

Longer life spans and increasingly large retirement savings balances mean more Americans will grapple with the tax implications of RMDs. Economists note that the SECURE Act’s later RMD age gives retirees a slightly longer planning window, but many still underestimate how quickly required distributions rise.

RMDs are unavoidable for those with traditional retirement accounts, but their tax bite doesn’t have to be severe. With early planning and strategic use of the tax code, retirees can preserve more of their savings and avoid surprises come tax season. Financial experts emphasize the same message: the best time to plan for RMDs is years before they start.